The success of the Falcon films led to a radio series that premiered on the American Blue Network on April 10, 1943, and aired for the next ten years on various networks. The Falcon, called Michael Waring, worked as a private investigator, with no office and no secretary. Berry Kroeger was the first radio voice of the Falcon, followed by James Meighan, Les Tremayne, Les Damon, and George Petrie. Nearly all the shows were broadcast from New York.

Each show usually started out with a telephone call to The Falcon from a beautiful woman. Answering in his slightly British accent, he would reply to her and another adventure would follow. Waring was snappy and sarcastic with the incompetent police who were inevitably unable to solve the mysteries without his help. The radio plots mixed danger, romance and comedy in equal parts. A total of about 88 shows, representing the length of the run, are available today.